Hey y'all. I am having a little trouble diagnosing some problems with my mini.
1975 Leyland 1000
I was having trouble with it running good and went over everything I can think of. I checked compression, timing, dizzy points, valve gaps, replaced the fuel filter, and tweaked the carbs a ton. I ended up buying a rebuild kit and rebuilt the carbs.
Since then, I am only able to drive the mini about 5-10 minutes before it dies. It starts by a small blip of power loss. Not a slow decrease of loss, but a 1/2 second complete loss of power (torque). The blips increase in frequency until it completely looses power and I am stranded. Give it 10 minutes to 'rest' and I can limp back home. I thought there might be an intake leak that when the car warms up gets worse. I replaced the manifold gasket and ensured that it was good and tight, so I don't think it is there.
I assume that something is off with the carb build, but am unsure. I assume this is not a new experience and need some guidance on what to look at.
Some other things I have noticed, but don't think they contribute to the present problem:
- I have a wideband and see that I run really rich during idle, which I intentionally set to keep from going too lean during load conditions. I am running GY needles. Don't know if this is a common for others.
- When letting off the gas after accelerating, the wideband runs really lean. The dashpots are full. I think I have heard about dashpot springs affecting this, but don't remember where I was reading it.
- I have noticed that the dashpots need oil very regularly. Don't know if it is common to fill them once a week?
Sorry if some of these issues are basic, but as you probably can tell, I am from the other side of the pond and don't have the extensive background as y'all might have.
Let me know if there are any additional details that you want to know in order to help diagnose.